rs761921681

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBS1_Supporting

The NM_016169.4(SUFU):​c.43C>A​(p.Pro15Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000497 in 1,569,828 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P15A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

SUFU
NM_016169.4 missense

Scores

1
3
15

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 1.15

Publications

0 publications found
Variant links:
Genes affected
SUFU (HGNC:16466): (SUFU negative regulator of hedgehog signaling) The Hedgehog signaling pathway plays an important role in early human development. The pathway is a signaling cascade that plays a role in pattern formation and cellular proliferation during development. This gene encodes a negative regulator of the hedgehog signaling pathway. Defects in this gene are a cause of medulloblastoma. Alternative splicing results in multiple transcript variants.[provided by RefSeq, May 2010]
SUFU Gene-Disease associations (from GenCC):
  • medulloblastoma
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
  • nevoid basal cell carcinoma syndrome
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Illumina, Genomics England PanelApp
  • basal cell nevus syndrome 2
    Inheritance: AD Classification: STRONG Submitted by: G2P
  • ocular motor apraxia, Cogan type
    Inheritance: AD Classification: STRONG Submitted by: Franklin by Genoox
  • Joubert syndrome 32
    Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
  • Joubert syndrome
    Inheritance: AR, AD Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
  • apraxia
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
  • ciliopathy
    Inheritance: AR Classification: LIMITED Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.10585758).
BS1
Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.0000501 (71/1417684) while in subpopulation NFE AF = 0.0000632 (69/1092008). AF 95% confidence interval is 0.0000508. There are 0 homozygotes in GnomAdExome4. There are 24 alleles in the male GnomAdExome4 subpopulation. Median coverage is 46. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SUFUNM_016169.4 linkc.43C>A p.Pro15Thr missense_variant Exon 1 of 12 ENST00000369902.8 NP_057253.2 Q9UMX1-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SUFUENST00000369902.8 linkc.43C>A p.Pro15Thr missense_variant Exon 1 of 12 1 NM_016169.4 ENSP00000358918.4 Q9UMX1-1
SUFUENST00000423559.2 linkc.43C>A p.Pro15Thr missense_variant Exon 1 of 10 1 ENSP00000411597.2 Q9UMX1-3
SUFUENST00000369899.6 linkc.43C>A p.Pro15Thr missense_variant Exon 1 of 11 1 ENSP00000358915.2 Q9UMX1-2

Frequencies

GnomAD3 genomes
AF:
0.0000460
AC:
7
AN:
152144
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000170
AC:
3
AN:
176570
AF XY:
0.0000308
show subpopulations
Gnomad AFR exome
AF:
0.000116
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000270
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000501
AC:
71
AN:
1417684
Hom.:
0
Cov.:
46
AF XY:
0.0000342
AC XY:
24
AN XY:
701814
show subpopulations
African (AFR)
AF:
0.0000309
AC:
1
AN:
32324
American (AMR)
AF:
0.00
AC:
0
AN:
38568
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25318
East Asian (EAS)
AF:
0.00
AC:
0
AN:
37120
South Asian (SAS)
AF:
0.00
AC:
0
AN:
81740
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
47494
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4476
European-Non Finnish (NFE)
AF:
0.0000632
AC:
69
AN:
1092008
Other (OTH)
AF:
0.0000171
AC:
1
AN:
58636
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.554
Heterozygous variant carriers
0
4
8
12
16
20
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000460
AC:
7
AN:
152144
Hom.:
0
Cov.:
33
AF XY:
0.0000404
AC XY:
3
AN XY:
74328
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000483
AC:
2
AN:
41428
American (AMR)
AF:
0.00
AC:
0
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5194
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10612
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000735
AC:
5
AN:
68010
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.0000451184), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.396
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000304
Hom.:
0
Bravo
AF:
0.0000416
ExAC
AF:
0.0000174
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Joubert syndrome 32 Uncertain:1
Jan 13, 2019
Baylor Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Gorlin syndrome;C0025149:Medulloblastoma Uncertain:1
Dec 05, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 15 of the SUFU protein (p.Pro15Thr). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with SUFU-related conditions. ClinVar contains an entry for this variant (Variation ID: 453965). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Familial meningioma Uncertain:1
Dec 14, 2023
Baylor Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Uncertain:1
Mar 21, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Hereditary cancer-predisposing syndrome Uncertain:1
Jul 05, 2023
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.P15T variant (also known as c.43C>A), located in coding exon 1 of the SUFU gene, results from a C to A substitution at nucleotide position 43. The proline at codon 15 is replaced by threonine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.069
BayesDel_addAF
Benign
-0.19
T
BayesDel_noAF
Benign
-0.28
CADD
Benign
22
DANN
Uncertain
1.0
DEOGEN2
Benign
0.13
T;.;.
Eigen
Benign
-0.47
Eigen_PC
Benign
-0.31
FATHMM_MKL
Benign
0.26
N
LIST_S2
Uncertain
0.88
D;D;D
M_CAP
Uncertain
0.20
D
MetaRNN
Benign
0.11
T;T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
0.34
N;N;N
PhyloP100
1.2
PrimateAI
Pathogenic
0.81
D
PROVEAN
Benign
0.35
N;N;N
REVEL
Benign
0.069
Sift
Benign
0.039
D;D;D
Sift4G
Benign
0.64
T;T;T
Polyphen
0.0
B;B;B
Vest4
0.28
MutPred
0.27
Gain of phosphorylation at P15 (P = 0.0017);Gain of phosphorylation at P15 (P = 0.0017);Gain of phosphorylation at P15 (P = 0.0017);
MVP
0.27
MPC
1.3
ClinPred
0.13
T
GERP RS
3.5
PromoterAI
0.042
Neutral
Varity_R
0.11
gMVP
0.57
Mutation Taster
=90/10
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs761921681; hg19: chr10-104263952; COSMIC: COSV105926748; API